|<< AMD Zen 2|
Schematic drawing of the Zen-2 microarchitecture
|Production:||since July 7, 2019|
|Manufacturing :||12 nm to 7 nm|
|Instruction set :||AMD64 (x86-64)|
|Microarchitecture :||x86 processor|
Names of the processor cores:
Zen 2 is a processor micro- architecture (x86-64) from AMD . Zen 2 is the third generation of the first generation Zen processors introduced in 2017 under the brand names "Ryzen" and "Epyc" . Both the architecture and the manufacturing process technology have been improved (from 14 nm / 12 nm to 7/12 nm). AMD presented this processor generation in June 2019 at Computex in Taiwan. As with the Zen-1 servers or high-performance processors Epyc and Threadripper, multi-chip modules are used, this time also with the Ryzen workstation processors: All input / output functions are in a separate I / O “chiplet “(I / O-Die), which is manufactured as before in 12 nm process technology (12LP, 12 nm leading performance ) at Globalfoundries. The 7-nm process technology (N7) prepared in TSMC CPU This exist as Zen-1-Zeppelin of 2 × 4 cores (Core Complex or "CCX") - blocks each having 2 × 16 MB Level 3 cache that are coupled via high-performance serial connections called " Infinity Fabric ". The sale of the Ryzen 3000 processors (code name "Matisse") began on July 7, 2019, alluding to 7 nm technology. Generation 2 Epyc server processors (code name "Rome") will also be delivered in July .
Both Ryzen 3000 and Epyc Rome are "socket-compatible" with their predecessors, so they fit in motherboards for the Zen 1 generation ( AM4 or SP3 ) and can be used after a previous BIOS update. A320 boards are officially not compatible with Zen 2, but all five motherboard manufacturers have released appropriate BIOS updates. If new functions such as PCIe Generation 4 are to be used, new motherboards are required; AMD offers the new X570 and B550 chipsets for this purpose . ASUS also reportedly checked to enable PCIe 4.0 for individual or all lanes (corresponding to PCIe graphics slot × 8, PCIe graphics slot × 16 and / or NVMe / M.2 × 4) on 19 boards of the second generation (400 chipsets) , but refrained from doing so.
Innovations compared to the first generation are:
- Support PCIe generation 4.0 (thus doubling the I / O bandwidth)
- Ryzen processors with up to 16 CPU cores
- Doubling the L3 cache size
- Increase from two to three AGU units ( Address Generation Units )
- two AVX2 execution units ( SIMD units with 256 bit width)
- Due to the 7 nm manufacturing process, higher computing efficiency (more computing capacity per watt of power requirement) and slightly higher maximum clock frequencies
The next generation, Zen 3 , is due to be introduced in 2020.
Ryzen CPUs based on the Zen 2 microarchitecture benefit, like the previous generation, in particular from fast main memory, because the clock rate of the "Infinity Fabric" depends directly on the memory clock. Faster working memory also means faster data exchange between two core complexes or between the chip sets. While Zen 2 is specified for up to DDR4-3200, the sweet spot at the time of publication is around DDR4-3600 to DDR-3733 - at higher memory clocks, Infinity Fabric is switched to an asynchronous mode, which increases the memory latency and thus the Adversely affects performance. Only with significantly higher clock rates around the DDR4-4800 is this disadvantage put into perspective again, but this results in disproportionately high costs. With experimental pre-series models from Gigabyte , Ryzen 3000 CPUs on Socket AM4 have been possible since September 2019 under standard conditions (air cooling) up to DDR4-5000.
Ryzen 3000 "Matisse"
On July 7, 2019, five processor models for AM4 with 6 to 12 cores initially appeared, and the Ryzen 9 3950X with 16 cores was announced for later in 2019. In October 2019, AMD presented two more models (for the time being) only for OEMs and the Chinese market: Ryzen 9 3900 and Ryzen 5 3500X . The Ryzen 3 3300X and Ryzen 3 3100 were announced for May 21, 2020, and the XT models with a slightly higher turbo rate on July 7, 2020. An overview:
|Ryzen 9 3950X||16/32||3.5 / 4.7 GHz||64 Mbytes||4.0 (x16)||105 W|
|Ryzen 9 3900XT||12/24||3.8 / 4.7 GHz|
|Ryzen 9 3900X||3.8 / 4.6 GHz|
|Ryzen 9 3900 1||3.1 / 4.3 GHz||65 W|
|Ryzen 7 3800XT||8/16||3.9 / 4.7 GHz||32 Mbytes||105 W|
|Ryzen 7 3800X||3.9 / 4.5 GHz|
|Ryzen 7 3700X||3.6 / 4.4 GHz||65 W|
|Ryzen 5 3600XT||6/12||3.8 / 4.5 GHz||95 W|
|Ryzen 5 3600X||3.8 / 4.4 GHz|
|Ryzen 5 3600||3.6 / 4.2 GHz||65 W|
|Ryzen 5 3500X 2||6/6||3.6 / 4.1 GHz|
|Ryzen 5 3500 3||16 Mbytes|
|Ryzen 3 3300X||4/8||3.8 / 4.3 GHz|
|Ryzen 3 3100||3.6 / 3.9 GHz|
The APUs of the Zen architectures, on the other hand, each belong to the previous generation, in the case of Ryzen 3000 thus to Zen + , although the desktop APUs Ryzen 5 3400G and Ryzen 3 3200G were presented together with the aforementioned Zen 2 processors (mobile APUs, however half a year earlier).
Epyc Generation 2 "Rome"
The code name for this server CPU is Rome . The CPU was presented for the first time at Computex 2019 in May, the date of publication is August 7, 2019. As in generation 1, AMD is already producing a multi-chip module (MCM), which now consists of an input / output chip in 14 nm technology produced by Globalfoundries and 8 CPU chips each with 2 4-fold CoreComplex chips in 7 nm technology produced by TSMC. Epyc-Rome has a maximum of 64 CPU cores. Unchanged from the Zeppelin / Generation 1, the CPU has 8 DDR4 main memory channels, which are now all connected by the input / output chip, making the NUMA constellation much easier than the Zeppelin. AMD produces variants for one- or two-socket systems so that systems with up to 128 CPU cores can be built.
The CPU can be equipped with up to 4 terabytes of main memory (128 GB DIMMs), one or two socket systems have 128 lanes PCIe 4.0 available for input / output purposes. AMD-Epyc-Rome mainly competes with Intel Xeon (Cascade Lake) .
While the first generation of Epyc CPUs achieved or only just exceeded the performance values of the Intel Xeon - Skylake - Scalable Processors, which dominate the server environment, the Epyc-Rome CPU has except for a few functions (e.g. no persistent memory modules, none AVX512 machine commands) now, in some cases, considerable performance advantages over Intel's Cascade Lake - Scalable Processors
2nd generation Epyc model numbers end with the number “2”, model numbers with a “P” appended are only suitable for one-socket systems, the others for one or two-socket systems. An H in second place stands for a model with increased TDP for a higher base clock, F for systems with a particularly high clock frequency and more cache at the expense of the TDP.
|TDP||cTDP min-max||L3 cache||Number of
|7H12||64||128||2.6 GHz||3.3 GHz||280 watts||256 Mbytes||8th|
|7742||64||128||2.25 GHz||3.4 GHz||225 watts||225 - 240 watts||256 Mbytes||8th|
|7702||64||128||2.0 GHz||3.35 GHz||200 watts||165 - 200 watts||256 Mbytes||8th|
|7702P||64||128||2.0 GHz||3.35 GHz||200 watts||165 - 200 watts||256 Mbytes||8th|
|7662||64||128||2.0 GHz||3.3 GHz||225 watts||225 - 225 watts||256 Mbytes||8th|
|7642||48||96||2.3 GHz||3.3 GHz||225 watts||225 - 240 watts||256 Mbytes||8th|
|7552||48||96||2.2 GHz||3.3 GHz||200 watts||165 - 200 watts||192 MB||6?|
|7542||32||64||2.9 GHz||3.4 GHz||225 watts||225 - 240 watts||128 Mbytes||4th|
|7532||32||64||2.4 GHz||3.3 GHz||200 watts||200 - 200 watts||256 Mbytes||8th|
|7502||32||64||2.5 GHz||3.35 GHz||180 watts||165 - 200 watts||128 Mbytes||4th|
|7502P||32||64||2.5 GHz||3.35 GHz||180 watts||165 - 200 watts||128 Mbytes||4th|
|7452||32||64||2.35 GHz||3.35 GHz||155 watts||155 - 180 watts||128 Mbytes||4th|
|7F72||24||48||3.2 GHz||3.7 GHz||240 watts||192 MB||6th|
|7402||24||48||2.8 GHz||3.35 GHz||180 watts||165 - 200 watts||128 Mbytes||4th|
|7402P||24||48||2.8 GHz||3.35 GHz||180 watts||165 - 200 watts||128 Mbytes||4th|
|7352||24||48||2.3 GHz||3.2 GHz||155 watts||155 - 180 watts||128 Mbytes||4th|
|7F52||16||32||3.5 GHz||3.9 GHz||240 watts||256 Mbytes||8th|
|7302||16||32||3.0 GHz||3.3 GHz||155 watts||155 - 180 watts||128 Mbytes||4th|
|7302P||16||32||3.0 GHz||3.3 GHz||155 watts||155 - 180 watts||128 Mbytes||4th|
|7282||16||32||2.8 GHz||3.2 GHz||120 watts||120 - 150 watts||64 Mbytes||2|
|7272||12||24||2.9 GHz||3.2 GHz||120 watts||120 - 150 watts||64 Mbytes||2|
|7F32||8th||16||3.7 GHz||3.9 GHz||180 watts||128 Mbytes||4th|
|7262||8th||16||3.2 GHz||3.4 GHz||155 watts||155 - 180 watts||128 Mbytes||4th|
|7252||8th||16||3.1 GHz||3.2 GHz||120 watts||120 - 150 watts||64 Mbytes||2|
|7232P||8th||16||3.1 GHz||3.2 GHz||120 watts||120 - 150 watts||32 Mbytes||2|
It becomes clear that variants with significantly fewer than 64 CPU cores are also available. AMD does not always equip the multi-chip module with 8 CPU chips, but usually with the number currently required. This has the effect that with only 2 CPU chips, the memory bandwidth decreases due to the few connections from the 8 DDR4 channels to the only 2 CPU modules. Individual models are equipped with more than the minimum number of chips required in order to offer more cache per CPU core.
Threadripper 3000 "Castle Peak"
On November 7th, 2019 AMD presented two CPUs of the Threadripper series based on Zen 2. These Threadripper 3000 CPUs are built for the sTRX4 socket , which is mechanically but not electrically compatible with the TR4 socket of the Threadripper 1000 and 2000 series. A new chipset called TRX40 with 88 PCIe 4.0 lanes (72 of which are available) is also used. So new motherboards are needed, and first-generation Zen Threadripper systems cannot be upgraded with these CPUs. In contrast to Epyc, the CPUs only lead four DDR4 main memory channels to the outside, but also support ECC memory modules . The TR 3990X with 64 cores followed in February 2020.
|TR 3990X||2.9 / 4.3 GHz||64/128||256 MB||88 4.0 (x16)||280 W||8th|
|TR 3970X||3.7 / 4.5 GHz||32/64||128 MB||4th|
|TR 3960X||3.8 / 4.5 GHz||24/48||128 MB||4th|
Threadripper Pro 3000
On July 14, 2020, AMD released information about the Threadripper Pro CPUs. These CPUs are intended exclusively for the OEM market and use the WRX80 socket with 8 memory channels. The CPUs support ECC (also RDIMMS and LRDIMMs), have 128 PCIe 4.0 lanes and are technically closely related to the EPYC CPUs. However, in contrast to the EPYC, only 2TB RAM are supported and the platform is only suitable for systems with one socket.
|L3 cache||PCI Express||TDP||Number of
|TR Pro 3995WX||2.7 / 4.2 GHz||64/128||256 MB||128 4.0||280 W||8th|
|TR Pro 3975WX||3.5 / 4.2 GHz||32/64||128 MB||4th|
|TR Pro 3955WX||3.9 / 4.3 GHz||16/32||64 MB||2|
|TR Pro 3945WX||4.0 / 4.3 GHz||12/24||64 MB||2|
Ryzen 4000U / 4000H "Renoir" mobile APUs
At CES 2020 in January, AMD announced the successor to the Ryzen (Generation 1) 3000 mobile processors. Ryzen 3000 is manufactured in the 12 nm + process at Globalfoundries, Ryzen 4000 (code name Renoir ) at TSMC in the 7 nm process. This enables the 4000 series to accommodate up to 8 CPU cores on approx. 150 mm². The 7 nm process also enables computing efficiency (computing power / watt) to be increased by a factor of 2. These processors also have an integrated graphics accelerator unit (iGPU) so that the entire package belongs to the Accelerated Processing Unit or AMD Fusion concept. The APUs appear as U variants with 15 watt TDP for very efficient and light notebooks and H variants with 45 watt TDP for gaming notebooks. Compared to the previous generation, the number of graphics compute units has not increased, but actually decreased, but the performance and the clock frequency of the individual units, so that in total there is also a moderate increase in performance compared to the previous generation. The graphics cores still belong to the Vega generation , the APUs support PCIe version 3.0. Faster main memory modules according to DDR4-3200 or LPDDR4X-4266 specification are supported.
On March 16, 2020, AMD presented two more models: Ryzen 9 4900H and Ryzen 9 4900HS.
|Surname||Base / boost clock||Cores / threads||L2 / L3||CUs||IGP Freq.||TDP|
|Ryzen 9 4900H||3.3 / 4.4 GHz||8/16||4/8 MB||8th||1750||45 W|
|Ryzen 9 4900HS A||3.0 / 4.3 GHz||1750||35 W|
|Ryzen 7 4800H||2.9 / 4.2 GHz||7th||1600||45 W|
|Ryzen 7 4800HS A||35 W|
|Ryzen 7 4800U||1.8 / 4.2 GHz||8th||1750||15 W|
|Ryzen 7 4700U||2.0 / 4.2 GHz||8/8||7th||1600|
|Ryzen 5 4600HS A||3.0 / 4.0 GHz||6/12||3/8 MB||6th||1600||35 W|
|Ryzen 5 4600H||6th||1500||45 W|
|Ryzen 5 4600U||2.1 / 4.0 GHz||15 W|
|Ryzen 5 4500U||2.3 / 4.0 GHz||6/6|
|Ryzen 3 4300U||2.7 / 3.7 GHz||4/4||2/4 MB||5||1400|
Ryzen 4000G "Renoir" desktop APUs
The Zen-2 desktop APUs were presented on July 21, 2020, including a Ryzen 7 for the first time. For the time being, all of them are exclusively OEM products that will only be available from end customers later. PCIe 4.0 is not supported.
Basic / turbo clock
|Ryzen 7 4700G||8/16||3.6 / 4.4 GHz||8 MiB||65 W||Vega 8||2,100 MHz|
|Ryzen 7 4700GE||3.1 / 4.3 GHz||35 W||2,000 MHz|
|Ryzen 5 4600G||6/12||3.7 / 4.2 GHz||65 W||Vega 7||1,900 MHz|
|Ryzen 5 4600GE||3.3 / 4.2 GHz||35 W|
|Ryzen 3 4300G||4/8||3.8 / 4.0 GHz||4 MiB||65 W||Vega 6||1,700 MHz|
|Ryzen 3 4300GE||3.5 / 4.0 GHz||35 W|
In addition to the products listed, as with most previous APUs, all models are also available with business features. They can be recognized by the infix "PRO" and a number increased by 50, but identical with regard to all values in the table (except that AMD specifies a graphics clock of 2,100 MHz for the Ryzen 7 PRO 4750GE).
- Michael Feldman: AMD Puts Epyc In The HPC Driver's Seat. In: nextplatform.com. May 30, 2019, accessed May 21, 2020 .
- Alexander Köpf: PCI Express 4.0 obviously possible on older AM4 mainboards. July 12, 2019, accessed May 21, 2020 .
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- Xbox Series X with games in 120 fps, 12 teraflops and Smart Delivery. February 24, 2020, accessed February 25, 2020 .
- Playstation 5: New key data for the Zen 2 CPU. October 10, 2019, accessed February 25, 2020 .
- Best RAM Timings for Ryzen 3000 CPUs (3600 / 3700X / 3800X / 3900X). Retrieved May 21, 2020 .
- Roman Hartung: 5000 MHz RAM clock with RYZEN 3900X. In: der8auer. Retrieved October 7, 2019 .
- AMD processor Ryzen 3000: From July 7th on Intel hunt, from September also with 16 cores. Retrieved May 21, 2020 .
- AMD Server-CPUs Epyc 7002: With Zen 2 past Intel. Retrieved May 21, 2020 .
- Timothy Prickett Morgan: AMD Doubles Down - And Up - With Rome Epyc Server Chips ( English ) nextplatform.com. August 7, 2019. Retrieved September 7, 2019.
- AMD EPYC 7002 Series Rome Delivers a Knockout. Retrieved May 21, 2020 .
- AMD Epyc 7002: Benchmark records and many new servers. Retrieved May 21, 2020 .
- AMD EPYC 7002 Rome CPUs with Half Memory Bandwidth. Retrieved May 21, 2020 .
- Threadripper 3rd Generation is Here, Plus the Fastest Ryzen CPU Ever - IGN. Retrieved November 7, 2019 .
- Paul Alcorn 2019-11-07T14: 00: 02Z CPUs: AMD Unveils Threadripper 3960X and 3970X, Ryzen 9 3950X Details, and Athlon 3000G. Retrieved November 7, 2019 .
- Ryzen Threadripper 3000 32-core processor for 2000 USD. Retrieved November 8, 2019 .
- heise online: Ryzen 4000: AMD's eight-core processors for notebooks in detail. Retrieved March 16, 2020 .
- AMD Ryzen 4000 Mobile APUs: 7nm, 8-core on both 15W and 45W, Coming Q1. Retrieved May 21, 2020 .